Glass-shearing mechanism



BYRD.

Feb. 6,1923.

. GLASS SHEARING MECHANISM.

5 SHE S SHEET l FILED MAY 2,1921.

T. K, BYRD.

GLASS SHEARING MECHANISM.

HLED MAY 2, 192!- 5SHEETS-SHEET 2.

Feb; 6, 1923.

T. K. BYRD.

GLASS SHEARINU I'WECHf-WISM.

FILED {WW/2,1921. SHEETS SHEET 3v MUM Feb. 6, 1923.

'" T. K. BYRD.

GLASS SHEARING MECHANISM.

FILED- MAY 2. 1921.

5 SHEETS SHEET 4.

Feb. 6, 1923.

5 SHEETS-*SHEET 5 1,444,327. T. K. BYRD,

GLA'S'S SHEARING MECHANISM I FILED MAY 2| 192l- Patents Feb. it, @253.

'TEEODORE K. BYED, 0F BALTIMORE, MARYLAND.

GLASS-SHEABING MECHANISM.

Application filed may 2,

To all whom it may concern:

Be it known that I, Tneononn K. Brno, a citizen of the United States,residing at Baltimore, in the county of Baltimore City and State ofMaryland, have invented certain new and useful Improvements in Glass-Shearing Mechanism; and 1 do hereby declare the following to be a full,clear, and exactdescription of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to improvements in glass shearing, and moreparticularly stated contemplates the production-of means for effectivelysevering the glass blank or pattern 6 from a string or neck of glass.

In the production of glass ware, wherein a machine is provided of theOwens type for example. having a plurality of dipping heads forgathering the molten glass from a tank, it frequently happens that anunsightly shear mark or scar is found upon the product and in manyinstances to such an extent as to render the article unsalable. Atpresent it is customary to provide a knife, the shearing edge of whichcooperates with the bottom of the blank mold to sever the glassdrawn upinto the mold from the string or neck lifted from the molten mass in thetank. This construction has been found to be highly objectionable inthat the knife frequently strikes the bottom of the mold and in a veryshort time the glass is more nearly chewed off if struck by a dullinstrument, than cleanly severed. It is now necessary to sharpen theblank molds at frequent intervals by removing and "turn ing them in alathe. This operation is both tedious and unsatisfactory in that a largeamount of time is lost, and in addition the mold blanks are shortened,thereby reducing.

the length of the pattern and the resulting It is an object of thepresent invention to overcome these experienced difliculties and producea shearing mechanism operable immediately beneath and independent of thebottom face of the blank mold, thereby increasing the longevity of useofsaid mold,

and eliminating the shear mark or scar.

' Another object of the invention is the production of cooperatingshearing members, one of said members constituting a shearing blade andthe other of said members form 1921. Serial No. 466,014.

ing a shear plate against which the former member operates to sever theglass, said shear plate being interposed between the bottom of the.blank mold and the aforesaid shearing member. a

\ A further object of this invention is to provide a glass shearingmechanism consisting of complementary shearing members interconnectedwith the dipping head and con-. trolled by the operation of the machine.

'ith these and other objects in view the invention further consists in,the arrangement and construction of the several parts hereinafterdescribed and pointed out in the appended claims.

in the accompanying drawings wherein is illustrated an embodiment of myinvention as applied to the dipping head of an Owens bottle machine,

Fig. l is a front elevation'of my invention as applied to a clippinghead;

Fig. 2 is a view in side elevation showing a portion of a glass tank andthe severed string or neck of glass lifted therefrom;

Fig. 3 is a horizontal sectional view on the line 3-3 of Fig. 2;

Fig. at is a similar fragmentary'sectional view on an enlarged scale ofthe cam and roller for swinging the shear plate from undcr the blankmold; v

F ig. 5 is a detail vertical sectional view on the line 5-5 of Fig. 4,of the aforesaid cam and roller connection;

Fig. 6 is an enlarged. detail plan view of the blank molds in separatedor open position, illustrating the relative positions of the respectiveshearing blade and shear plate;

Fig. 7 is a vertical sectional view through the blank mold andassociated shearing members, the shearing blade having moved under theshear plate for severing the glass;

Fig. 8 is a detail plan view of the complementary shearing members shownas having severed the glass;

Fig. 9 is a detail perspec ve View of the shear plate;

Fig. 10 is a detail horizontal sectional View on the line 10-l0 of Fig.2; and

Fig. 11 is a detail plan view of a modified form of complementaryshearing members.

Referring to the drawings in which simi lar reference charactersdesignate corre-X sponding parts in the several views, the inventioncomprises among other things a dipping head 1 operably controlled by theusual mechanism of a glass machine (not shown) a blank or pattern mold 2and the shearing mechanism generally indicated by the numeral 3.

i The dip head, as it is frequentlyreferred to, includes a slide section4 vertically movable between supporting guide posts 5 which latter aremounted on the dipping head frame 6. A suitable means for impartingmovement to the slide section at is arranged at the top thereof, and asshown consists of a bell crank lever 7 pivot-ally supported in a bracket8. One end of the lever 7 is connected to the end of a link 9. the otherend of said link being connected at 10 to the slide section 4. Anoperating rod 11 is attached to the opposite end of the bell cranklever, said rod being interconnected with the operating mechanism of themachine. It will be understood that various other means may be used toimpart movement to the slide section. p

The blank mold 2. is supported upon an arm 12 extending from and movablewith the slide 4.. The separable blank mold sections 13 and 14 are ofthe usual construction each being supported in therespective arms 15 and16, which latter are pivotally mounted at 17 upon the arm Each arm 15and 16 is formed with an extension arranged to project either through oraround the dipping head frame 6 and connect with suitable operatingmechanism carried by the glass machine as will be understood. The usualclamping screws 18 and leveling screws 19 are provided on each moldsection for properly positioning said sections in the respective lowersupporting portions 20 and 21 of the arms 15-and l6.

The foregoing mechanism is shown and described as generally constitutingthat portion of an Owens bottle machine to which the present inventionis applicable. The type of Owcns machine. for which my improved shearingmechanism has been pr marily designed. comprises a rotary travellingframe carrying a plurality oi the blank molds 2 moved successively intooperative relation with a pool ol glass. and means ineluding adifl'erential pressure or vacuum for sucking the molten through anopening in the blank mold. Associated neck and finishing molds areprovided for fun ther shaping the he understood. Vl hen the glass drawninto the blank mold. to form the pattern. from which the. product orarticle to made. a string or neck of the nu'ilten glass connects thesame with the molten glass in the pool or tank. The means for severingthis string or neck oi glassso as to prevent the formation oi a shearmark or scar will now be described.

islicaring blade 22 provided with a rutblank or pattern, as will tingedge 2-3 is mounted upon a movable arm 24:. The blade is formedo't'suitablc cutting steel and is detachably secured to the arm let. Asupporting rod 25 is secured at its lower end to the arm 24F. by meansof a connecting device 26 through which passes a set screw 27 adapted toengage the rod- 25 and to also permit of the adjustment of the aforesaidblade arm 2 1 upon the supporting rod. A key prevents the rotation ofthe device upon the rod The connecting device 26 is formed with aslotted extension 28 arranged to fit over the end of the arm 24,overhanging side flanges QSlbeing providedon the extension 28 forrigidly secun ing the supporting rod and blade together. A screw 30joins the connecting device to the blade arm, the top of said screwserving as a limiting means to prevent the shearing blade from strikingthe mold as it moves beneath the same for se ering the glass.

The supporting rod 25 is vertically movable through the bearing bracket31 project ing from an arm 32 secured to the dipping frame 6. A lever 33having a forked end 34 arranged to-straddle trunnions 35 serves toelevate and lower the supporting rod. and in turn the shearing blade, aswill more fully hereinafter appear. The upper end or the rod is threadedas at 36 and an adjusting wheel nut 37 is positioned thereon forpurposes of vertically adjusting the shearing blade. g:

The lever 33 is pivoted at 38 to thearni 32 and one end of an actuatingrod 39 is connected to thearm ll) of the lever, the other arm of the rod39 being interconnected with and operably controlled by the mechanism ofthe glass machine. I

The means for moving the shearing blade to sever the glass includes arelatively long gear 1-1 keyed to the supporting rod 25 and a rack bar42 adapted to mesh with said gear. The rack bar is operativelycontrolled through an arm or rod 43 interconnected with'the machine. thesaid shearing blade being swung in timed relation with a cooperatingshear plate ld and an associated operating mechanism now to bedescribed.

Tl1e shear plate t l 'lormel of relatively thin material and is providedwith a cutting edge to, cooperatively associated with the cutting edgeof the shearing blade. The shear plate -14 is uiovably associated withthe bottom of the blank mold and more particularly one section thereof,and during the glass cutting operation remains 'substan tiallystationary. A curved portion 46 substantially conforming to the contourof a portion oi? the glass opening in the mold blank is provided on theshear plate is, and in practice it is usual to bring this curved edgeinto substantially a registering posi tion with the side of the glassopening in the mold blank. as illustrated in Figs. 7 and the edge of theblank mold opening the sheer marl; or scar is likewise imperceptible toall inl ents end purposes.

The structural features of the sheer plate may be vsrie but as shown itis formed of a relatively thin, flat plate having dependingstrengthening flanges A shank 48 extends from the shear plate and ised-justably clamped at 49 in the end oi a supporting arm 50. A verticalpos 51 supporbs the arm 50, and a vertical adjusting device is providedat the upper end ofssid post. The threaded end of she post 51 and a not53 comprise the said adjusting device.

The post 51 is held by a set sorew5 l in s; sleeve 55 provided on theend of'the bracket 56. The bracket 56 is pivotelly mounted on the pin orstud 5? and between lugs 58 er; tending from the guides 5 of the dippingframe.

Aconiool roller 59 is carried by a stud (i0, and is adjust-ably mountedby means of a set screw (-30 in a sleeve (1' projecting from the headsection 61 oil the bracket.- The seller 59 is cooperatively associatedwith 2L" cam 62 carried. by the sliding section 4 oft/he dipping heed.

The cam 62 is vertically edgustsble upon ihe slide section e by means ofthe screw threaded shank 63 operable through 2i revoluble nut 6,4 whichletter is provided with a Worm gear 65, A worm 66 iser-' ranged to meshwith he worm gear and on operating Wheel 6'? is provided for turning theworm. The worm {i6 n'iay be can ried by a shell; 68 mounted in a bearing69 provided on the supporting bracket l0.

When the hand Wheel 67 is revolved the worm transmits motion through theWorm gear 85 add nut- 54 to the shank 63 of the cam 62, thereby causingthe cam end 62 thereof to bear against the roller 59 end in turnposition or set the shear piste ed with respect to the opening iulshebottom of the blank mold. 59 and cam 62 also permits of the use ofdifferent size blank molds, as well as pro viding a take-up means forthe weer of same.

A hearing C 1 and g'dide shoe T2 extend from the slide section andmaintain the cam ($2 in its adjusted posiizion with respect to theroller 59 when the said slide section the head p The adjustment of theroller.

the sheer plate with respect to theopening in the bottom of the blankmold.

The means for swinging the bracket arm 56 and associe the blank moldment of she heed compriz and independent of the move- '3 depending rodhaving a.

lower. eaten in 76 adapted to bear against on 61 Of the bracket 56. The.

rod 75 is tably mounted in bearings 76 secured to guide member 5, and isprovided at upper end with on extending arm 7?, 1 end of which isoperably connected .to the actuating rod 39 hereinbefore referred to ascontrolling the vertical move ment' of the shearing blade. From thisconstruction it Willbeseen that upon lowering the shearing bledeft'lijebracket arm 56 is partially swung outwardly thereby carrying the shearplate 44 clear of the bottom of the blank mold. Upon the opening of theblank mold and the movement of the section 1,6 thereof, a roller 78carried by said section strikes a guide track 79 and the breclret arm 56is picked up and moved to its outermost position to permit of theoperetion of the other in chenism of the machine.

In operation, the dipping head is lowered with the blank mold sectionsclosed to permin gathering of the glass. The shear plate 44: is movedback by this operation,- the cam 62 hearing against the roller 59 andswinging the bracket 56 out-w rdly. The shearing de 253 is clear of theblank mold from the .ceding; operation of the 'device As the dippingheed moves upwardly the. shearing block is also operated by the rack,

bar so rotating the gear 41, thereby cairsing the 24 to swing inwardlyunder the bottom of the mold and engage the neck or string of glasswhich is severed between the relatively fixed edge 45 of the sheer plate44 end the moving cutting edge 23 of the shearinn blade 22. V

lhen the glass is severed the shearing blede is lowered by means of therod 39 rock ing the lever 33 and moving the supporting post downwardly;At the some time the exiiension 77 connected to the rod 39 de section 4of the clipping ill 76 ted shear-plate 44 eway from causes the rod 75 torotate and the lower end T6 thereof'to strike against the bracket 51 andmove the same a short distance clear or" the bottom of the blank mold.The shearing blade is now moved outwardly in its lowered plane by meansof the reverse movement of the rack bar 42 and gear lL The opening ofthe blank mold now causes the section 16 thereof to pick up the bracket56 78 and track 7 9, thereby thrdugh the roller late M- to its outermostmoving the shear p position.

The aforesaid lowering of the shearing blade and initial movement of theshearing plate permits of a sufiicient clearance be tween the cuttingdevices and the bottom of the blank mold so thiiflthc separatingsections of the latter can partially open without interference. \Tiththe cutting devices and blank mold sections in extended position thefinishing mold can be moved against the pattern or blank, the latterbeing supported by the neck molds as will be understood.

After the bottle is completed, the blank mold sections begin to close,and the shearing blade is moved vertically and returned to its normalcutting plane. the shearing plate bein returned by the action of thespring 72 as the blank mold section 16 moves inwardly.

The shearing blade remains in its lifted but outermost position for thenext cutting The shearing plate. however,

operation.

again when the dip head.

moves outwardly is lowered to gather another batch or gob of glass.

In the modified form shown in Fig. 11, the shearing blade 22 is providedwith an angular or forked cutting edge 23, and the shearing plate 44 maybe suitably formed with an angular or'to'rked shearing edge 45. By thisconstruction the shear mark or s ar is rendered particularlyinconspicuous or entirely obliterated. and the location of the cut-offpoint if it appears at all in the product. can be determined byadjusting the relatively fixed shear plate and cooperating movingshearing blade, as will be understood.

Various changes lying within the scope of my invention may be made and Ido not limit myself to the exactdisclosure herein set forth.

I claim:

1. T hecombination with a glass gathen ing device of a mold for thegathered glass, and means for severing the string or neck of glassextending from the mold. means including a shearing blade, a cooperating relatively thin shearing plate movable beneath one side moldadjacent the neck of glass extending through the opening in the mold,and means for moving the atoresaid shearing blade through the neck ofglass and across the atorcsaid sl'iearing plate. the latter g'emain ingstationary adjacent one side of said opening in the mold.

2. The combination ing device at a mold for the gathered glass, andmeans for severing the string or neck of glass extending t'rom the mold.said means including a relatively stationary portion of said said witha. glass gather- *hpening in the mold during the shearing};

shearing member positioned in close prosimity to the mold and adjacentthe neck ot' and movable with respect to said mold, and a cutting blademo 'able through said glass toward the aforesaid shearing member.

I. The combination with a glass gathe ing device of a mold for thegathered glai and means for severing the string or neck of glassextending from the mold, said means including a shearing member poshtioned substantially against the mold against the neck of glass andmovable with respect to said mold, and a cutting member movai: throughsaid glass toward the shearing member.

i. The combination with a glass gathering device of a mold for thegathered glass and means for severing the string or neck of glassextending from the mold, said means including a. shearing memberpositioned substantially against the bottom of said mold adjacent theneck of glass and. movable with respect to said mold, means foradjusting said shearing member, and a cutting device movable throughsaid and toward the aforesaid shearing member.

5. The combination with a glass gathen ing device of a mold for thegathered glass. and means for severing the string or neck of glassextending from the'moid, said meansincluding a relatively thin shearingmember-positioned substantially against the mold and the extending neclrof glass, said shearing member being movable with respect to said moldand a cutting member movablethrough the glass toward the aforesaid thinshearing member. l

6. The combination with iglass gather ing device of a mold for thegathered glass; and means for severing the string or necit of glassextending from the mold. said means including a relatively "thin and.stationary shearing plate arranged a ljacent the mold and necl-r of lassand movable with respect to said mo (1, and a shearing blade movablethrough the neck of glass and across the edge of the aforesaid shearingplate.

7. lhe combination with a glass ing device ota mold for the gathered wmeans including complementary shearing devices for severing the neck ofglass err tending from the mold, means for moving one of said shearingdevices beneath a portion of said mold to a noint adjacent one side ofthe opening in the mold. and means for moving the other of said devicesbeneath the remaining portion of said mold, and te ward the atoresaidshearing device to sever the neck of glass, one out said shez'iringdevices remaining stationary at one side oii th i operation. l i

8, The combination with a glass gathering device of a mold for thegatherei'l glass,

11, anti means including complementary shearing devices for severing theneck of glass exnding from the mold, means for moving shearing devicesindependently or each beneath the relative portions of the and means forlowering one of said shearing devices-from out of the cutting planeafter the cutting operation.

' 9. The combination with a glass gathering device of a mold for thegathered glass, means includingcomplementary shearing devices torsevering the neck of glass extending from the mold, means for movingsaid shearing devices independently of each other heneath the relativeportions of the. mold, means for moving one of said shearing devicesoutof the cutting plane after the glass is severed, and means for movingthe other of said shearing devices from beneath the mold.

10. The combination'with a glass gathering device of a mold for thegathered glass, means including complementary shearing devices forsevering the neck of glass extending from the mold, means for'rnovingsaid she'arin devices independently of each other beneat 1' the relativeportions of the mold, .means for lowering one of said shearing devicesout of the. cutting plane after the glass is severed, and means forhorizon" tally swinging both of said complementary shearing devices frombeneath the mold.

11. The combination with a glass gathering device including a movabledip head of a mold comprising separable sections, means including ashearing blade for severing the neck of glass extending from beneath themold, a shear plate positioned beneath the mold and cooperativelyassociated with the shearing blade, and, means including the aforesaiddip head for moving the aforesaid shearing device from beneath the moldwhen the sections comprising the latter are in;

closed. position and lowered into the molten glass for gathering same.

12. The combination with a glass gatheringdevice including a movable diphead of a mold comprising separable sections, means including a shearingblade for severing the neck of glass extending from beneath. the mold, ashear plate positioned heneath the mold and cooperatively associatedwith the shearing blade, means provided on said dip head for moving theshear plate from beneath the closed mold when the mold sections arelowered to gather the molten glass, and means for'returning' the shearplate to its operative position beneath the mold.

13. The combination with a glass gathen ing device including a movabledip head or a mold comprising separable sections, means including ashearing blade for severing neck of glass extending "from beneath mold.ashear plate positioned beneath mold and cooperatively associated witthe the the the

shearing blade, means including a cam carried by said dip head formoving the shear plate from beneath the mold when the closed sections ofthe latter are lowered for gathering the molten glass, and spring forreturning the shear plate to operative position beneath the mold.

let. The combination'witlraglass gathering device including a movabledip head of a mold comprising separable sections, means including ashearing blade for severing the neck of glass extending from beneath themold, a shear plate positioned beneath the mold and cooperativelyassociated with the sl'iearing blade, means provided, on said dip headfor moving the shear plate from beneath the mold when the closedsections of the latter are lowered to gather the molten glass. anadjusting device for said means adapted to regulate the position of saidshear plate beneath the mold, and means for returning the shear plate tooperative position beneath the mold.

15. The combination with ering device including a movable dip head ofmold comprising separable sections, means including a shearing blade forsevering the neck of glass extending from beneath the mold, a shearplate positioned beneath the mold and cooperatively associated with theshearing blade, a, pivoted bracket for said shear plate, a rollercarried by said bracket, a cam provided on the dip head, andcooperatively associated with said roller, and means including a springfor keeping the roller in operative contact with the aforesaid camwhereby the shear plate is moved to inoperative and operative positionwhen the dip head is lowered anvil1 raised respectively.

16. he combination with a glass gathering device including a movable diphead of a mold comprising separable sect-ions,means including a shearingblade for severing the neck of glass extending from beneath the mold, ashear plate positioned beneath the mold and cooperatively associatedwith the shearing blade, a pivoted support "for said shear plate,including an adjustable roller and associated cam for moving the shearplate from beneath the closed mold when gathe ing molten glass thesections of the latter open and means for returning a glass gatht-heshear plat-e ta its operative position neath the mold. I 1 w 4 4. Thecombination with a gathering device including a movable dip head of amold comprising; separable s ctions, meansv including a shearing bladefor severing the neck of extending from beneath the mold a platepositioned beneath the mold d ooperatively associate with the shearinmade, me is provided on the dip head for moving the from beneath themold, and no including one of the mold sections for moving the said sola mold comprising separable sections, ,Jne'ans including a shearingblade vtor severing the neck of glass extending from be neath the mold,a shear plate positioned be neath the mold and cooperatively associatedwith the shearing blade, means provided on the dip head for moving theshear plate from beneath the mold, means including one of the moldsections for swingin the shear plate clear of the dipping hea f when thesections of said mold separate, and means for returning the shear plateto operative position beneath the mold, u v

19. The combination with a glass gathering device of a mold for thegathered glass,

and means for severing the'ne ck or string of giglass extending from themold, said means I intruding a shearing blade having an angular orforked cutting edge, a cooperatively associated shearing; plate movableto a point adjacent one side of the mold opening and having an angularor forked means for positioning said shearing-plate with relation tothe" neck of glass, and means for moving the shearing blade toward theshearing edge of the aforesaid positioned shearing plate, the latter'remal'nlng Sta-'- tionary during the shearing operation.

In testnnony whereof ll aijx my slgnature, in presence of twosubscribing Witnesses.

THEODORE K. BYRD.

Witnesses Hinton MURRAY, James H, MARK.

shearing edge,

